Marcos Ortiz
Valmaseda
Address:
Mobile: (+58)0412 284 8616
Blog: http://marcosluis2186.posterous.com
PostgreSQL: http://www.postgresql.org
Fedora Profile: https://www.fedoraproject.org/wiki/User:Marcosluis
A young Data Scientist/Linux Geek learning some new everyday,
Summary interested on topics like: PostgreSQL, Hadoop, Pythonista,
Fedora Geek, MongoDB, Distributed Systems Design with
Hadoop and Erlang and with more than 5 years of expertise
managing Unix-based platforms.
PostgreSQL Python
Skills Red Hat Linux CentOS
Fedora Systems Engineering
Distributed Systems Memcached
Apache Hadoop
Data Analysis Database Administration
MongoDB VMware
VMware ESX Xen
Virtualization TCP/IP
Nginx Linux server administration
Linux Internals Performance Tuning
System Tuning SELinux
Java SQL
Bash R
Erlang Django
Git Subversion
OpenLDAP Varnish
Debian Linux Ubuntu
FreeBSD OpenBSD
Solaris KVM
LVS Bind
Software Development Enterprise Architecture
Universidad de las Ciencias
Experience Informáticas (UCI)
12 / 2011 - Present
Senior Software Engineer
I’m the current manager of the PostgreSQL’s and Systems
Administration’s Consulting Group of the Center of Technologies
for Data Management. - Participate like a technology advisor for
the new directions of the center
Participate with my coworkers on the PostgreSQL and Systems
Administration’s events on the area
My daily job allow to me to train to my coworkers on the
advanced administration of PostgreSQL and Advanced
Unix/Linux systems administration (mostly Red Hat, CentOS,
Debian and Ubuntu)
PDVSA Petroleos de Venezuela S.A.
05 / 2011 - 12 / 2011
Infrastructure Engineer && IT Consultant
Responsible for the design, implementation and deploying of a
completed system based on RedMine for Project Management
Working the analyst like Infrastructure Engineer for Ruby on
Rails applications (Varnish-Cache, Nginx, Passenger,
PostgreSQL-9.0, VsFTPd, Pentaho BI Suite)
Prepared the completed system using CentOS 6 and Debian 6
appliances.
Wrote the completed security policy using SELinux and Iptables
for all services on CentOS
self employee system engineer
05 / 2011 - 08 / 2011
Consultant\System Engineer
Working like a independent consultant on Red Hat technologies
at Caracas, Venezuela for local business.
Help to the organizations to adopt Red Hat related technologies
and evaluate current architectures to suggest better changes
on them
Help to build a successful migration plan from Red Hat 4/5 to
Red Hat 6
Participate on the design and implementation of new
infrastructures like IT advisor (Virtualization, Hardware,
Architecture design, etc)
Universidad de las Ciencias
Universidad de las Ciencias
Informáticas
09 / 2009 - 07 / 2011
Network System Engineer/IT Consultant
Responsible for all servers and services of the center including:
BIND/DNS, ftp(Vsftpd), OpenLDAP, NFS, Samba, Apache,
Nginx, Lighttpd, Memcached, Heartbeat, RabbitMQ, Varsnish-
Cache
Responsible for the installation and configuration for a large
PostgreSQL Cluster (PgPool-II, PL/Proxy) for development and
testing purpose
Responsible for the installation and administration of a large
number of Memcached servers for image serving and database
queries results caching
Built a online image’s compression and serving system using
Bash, ImageMagick, VsFTPd, Nginx and Memcached
Designed and implemented a large Load Balancing Cluster for
Apache Servers for serving a high traffic site for a local
government on CentOS-5.4 and Red Hat EL 5.4 (Heartbeat,
LVS(ldirectord, Ipvsadm))
Designed the completed architecture of the Hadoop cluster of
the organization (more than 50 nodes) using automated
configuration tools(Puppet)
Participated on the design and implementation of the in-
frastructure’s migration to a virtualized environment using
Vmware Tools(ESX, vCenter, etc)
Designed and improve the services architecture from a old Red
Hat 4 systems to Red Hat 5.4 and 5.5 (planning to Red Hat 6)
Migrated and helped to 85% of the workstations on the
organization from Windows to Linux systems (Fedora and
Ubuntu)
Managed and gave all training on Advanced PostgreSQL
Databases Administration, Services Administration in Linux
Systems on the organization
Migrated and deployed all Databases Servers to a secure
enviroment based on the SELinux Mandatory Access Control
system
Migrated all main web sites hosting services (Nginx, Apache
HTTPD and Tomcat) to a secure environment using SELinux
Developed and wrote the completed SELinux policy for PgPool-
II and PostgreSQL services (planning to migrate to SE-
PostgreSQL)
Lead the tuning and optimization for all servers and services
(O.S kernel, File System tuning, I/O, etc)
University of Information Sciences 2004 - 2009
Education
University of Information Sciences 2004 - 2009
Education (La Habana
BS , Informatics Engineering
Universidad de las Ciencias
Informáticas
Bachelor in Computer Sciences
To play a challenging role where I would be happy to work.
Interests Happiness at work is everything: postgresql, hadoop, data
management, python/django advanced programming, new
technologies trends on data management, big data challenges,
network administration improvements, MBA training,
PostgreSQL Global Development Group: - PostgreSQL pgsql-
Associations es-ayuda@postgresql.org contributor
Django Project - http://www.djangoproject.com
Fedora Project - http://fedoraproject.org
English Spanish
Languages